5561105554944 has 120 divisors (see below), whose sum is σ = 16116326761392. Its totient is φ = 1846009774080.

The previous prime is 5561105554889. The next prime is 5561105554981. The reversal of 5561105554944 is 4494555011655.

5561105554944 is a `hidden beast` number, since 5 + 5 + 6 + 1 + 1 + 0 + 55 + 549 + 44 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1393284 + ... + 3614339.

Almost surely, 2^{5561105554944} is an apocalyptic number.

It is an amenable number.

5561105554944 is an abundant number, since it is smaller than the sum of its proper divisors (10555221206448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5561105554944 is a wasteful number, since it uses less digits than its factorization.

5561105554944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007888 (or 5007869 counting only the distinct ones).

The product of its (nonzero) digits is 10800000, while the sum is 54.

The spelling of 5561105554944 in words is "five trillion, five hundred sixty-one billion, one hundred five million, five hundred fifty-four thousand, nine hundred forty-four".